Heated Steering Wheel Switch Indicator Lamp Does Not Turn On

HEATED STEERING WHEEL SWITCH INDICATOR LAMP DOES NOT TURN ON





Description
- Heated steering wheel switch indicator lamp does not turn on the lamp.
- Heated steering wheel switch indicator lamp does not turn off the lamp.




Diagnosis Procedure
1.CHECK POWER SOURCE
1. Turn ignition switch ON.

CAUTION:
Never start the engine.
2. Turn heated steering wheel switch ON.
3. Check voltage between twin switch harness connector terminals.





Is the inspection result normal?
YES - GO TO 7.
NO - GO TO 2.
2.CHECK GROUND CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect twin switch connector. Service and Repair.
3. Check continuity between twin switch harness connector terminal and ground.





Is the inspection result normal?
YES - GO TO 3.
NO - Repair or replace damaged parts.
3.CHECK HARNESS BETWEEN HEATED STEERING WHEEL RELAY AND HEATED STEERING WHEEL
1. Disconnect heated steering wheel relay connector. Component Parts.
2. Check continuity between heated steering wheel relay harness connector terminal and twin switch harness connector terminal.





3. Check continuity between heated steering wheel relay harness connector terminal and ground.





Is the inspection result normal?
YES - GO TO 4.
NO - Repair or replace damaged parts.
4.CHECK HEATED STEERING WHEEL RELAY
Check heated steering wheel relay. Heated Steering Wheel Switch Indicator Lamp.
Is the inspection result normal?
YES - GO TO 5.
NO - Replace heated steering wheel relay. Component Parts.
5.CHECK POWER SOURCE (BATTERY)
Check the following.
- Battery
- Harness for short or open between battery and fuse block (J/B). Battery Power Supply.
- 15A fuse [No. 5, located in the fuse block (J/B)]. Fuse Block - Junction Box (J/B).
- Fuse block (J/B)
Is the inspection result normal?
YES - GO TO 6.
NO - Repair or replace damaged parts.
6.CHECK HARNESS BETWEEN A/C AUTO AMP. AND TWIN SWITCH
1. Check continuity between A/C auto amp. harness connector terminal and twin switch harness connector terminal.





2. Check continuity between A/C auto amp. harness connector terminal and ground.





Is the inspection result normal?
YES - GO TO 7.
NO - Repair or replace damaged parts.
7.CHECK HEATED STEERING WHEEL SWITCH
Check heated steering wheel switch. Heated Steering Wheel Switch.
Is the inspection result normal?
YES - Repair or replace A/C auto amp. Removal And Installation
NO - Replace heated steering wheel switch. Service and Repair.